So do I need to call the chart.opendata command before configuring my series?
As of now, I do the following
Chart1.Series.Clear
For i as integer = 0 to numberOfSeries-1
Dim newSeries as new SeriesAttributes
...configure series
Chart1.Series.add
Next
Chart1.OpenData(COD.Values, numberOfSeries,numberOfPoints)
...add data for each series
Chart1.CloseData(COD.Values)